Curve (Javadocs [I2P+ 2.13.0+] - API Version 0.9.70+)

java.lang.Object
- net.i2p.crypto.eddsa.math.Curve

All Implemented Interfaces:
Serializable
```
public class Curve
extends Object
implements Serializable
```
A twisted Edwards curve. Points on the curve satisfy $-x^2 + y^2 = 1 + d x^2y^2$
See Also:
Serialized Form

Constructor Summary
Constructors
Constructor and Description
Curve(Field f, byte[] d, FieldElement I)
Create a twisted Edwards curve.

Constructors
Constructor and Description
`Curve(Field f, byte[] d, FieldElement I)` Create a twisted Edwards curve.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`GroupElement`	`createPoint(byte[] P, boolean precompute)` Create a point from an encoded representation.
`boolean`	`equals(Object o)`
`FieldElement`	`get2D()` Return twice the curve parameter d.
`FieldElement`	`getD()` Return the curve parameter d.
`Field`	`getField()` Return the field.
`FieldElement`	`getI()` Return the square root of -1.
`GroupElement`	`getZero(GroupElement.Representation repr)` Return the zero element for the given representation.
`int`	`hashCode()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Curve
```
public Curve(Field f,
             byte[] d,
             FieldElement I)
```
    Create a twisted Edwards curve.
    Parameters:
    f - the finite field
    d - the curve parameter d
    I - the square root of -1
- Method Detail
  - createPoint
```
public GroupElement createPoint(byte[] P,
                                boolean precompute)
```
    Create a point from an encoded representation.
    Parameters:
    P - the encoded point
    precompute - whether to precompute
    Returns:
    the group element
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    equals in class Object
    Parameters:
    o - the object @return true if equal
  - get2D
```
public FieldElement get2D()
```
    Return twice the curve parameter d.
    Returns:
    2 * d
  - getD
```
public FieldElement getD()
```
    Return the curve parameter d.
    Returns:
    the curve parameter d
  - getField
```
public Field getField()
```
    Return the field.
    Returns:
    the field
  - getI
```
public FieldElement getI()
```
    Return the square root of -1.
    Returns:
    the square root of -1
  - getZero
```
public GroupElement getZero(GroupElement.Representation repr)
```
    Return the zero element for the given representation.
    Parameters:
    repr - the representation type
    Returns:
    the zero element, or null if unsupported
  - hashCode
```
public int hashCode()
```
    Overrides:
    hashCode in class Object
    Returns:
    hash code

Class Curve

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Curve

Method Detail

createPoint

equals

get2D

getD

getField

getI

getZero

hashCode